Portable oven.



H. GBHNRICH.

PORTABLE OVEN.

APPLIOATION FILED JULY 1a, 1911.

Patanted July 21, 19M.

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H. GEHNRIOH.' PORTABLE OVEN.

APPLICATION FILED JULY 13, 1911.

'Patented July 2l, 19M

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H. GBHNRICH.

PORTABLE OVEN.

APPLICATION FILED JULY 13, 1911.

Patented July 21, 19M.

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3 SHEETS-SHEET 3.

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FTE SATS HERMANN GEHNRII-I. QF. NEW YGRKN PORTABLE evan'.

for example as baking japan, lacquer, or-` enamel on metals or. for treat-mg metal' known under the name of sherardizing.

The invention consists in the novel method of heating-the oven, the heat being rconducted into a series of flues located at each side ofthe oven. .'Ihese flues areconf nected to an upper heat compartment or conduit and to a lower lire compartment. The heat in passing upwardly from the fire compartment radiates into the oven. The lamebeing inclosed within the fireA compartment, the upper conduit, and the' lues, will not come into contact with the articles in the oven and danger of fire is thus avoided.

rlfhe sectional casing is designed to form the walls ofthe oven, with the fire com-- partment and heat compartment located within the lower and upper portions. of the oven, while the connecting lues extend from the fire compartment upwardly alongside of the inner walls of the casing and being separated from the casing the entire surface of the flueswill freely diverge the heat A chimney is connected to the upper portion of the oven and it has' a swivel damper, the handle of which engages a bracket fixed to the door of the oven. This arrangement prevents the door from being opened until the damper is swiveled or opened. The oven has air inlet pipes extending through the lire comparti ment, the-air -thus admittedinto the ovenI is warm.

The novel features of the invention are more fully described in the following speciication and claims and illustrated in the accompanying drawings in which- Figure 1 represents a front elevation partly in section of a furnace embodying this invention. Fig. 2 is a vertical section taken along the line m of Fig. 1. Fig. 3 is a horizontal section taken along the line y y Fig. 1. Fig. Lit is a detail" section of a bae plate taken along the line z a-Fig. 1.

Specification, of LettersiPatent,

Anplicatien filed July 13, 1911. Serial No. ,638,305

Fig.- 5' is ardetail front elevation of a damper connection.

In. this drawingV the letter a designates an onen. which is built up of a number of' sections b. These-seotionshm/e double walls. with a-11on-heat conductor located between theI walls andl each section is removable so that theoven can be takendow-n. The oven has swinging doors c hinged at the frontA of the casing. At the lower part of the oven is situated a fire-compartment oZ- which is divided from the oven-by means offa plate c andthis plate is bolted: to the bottom ofI the oven. rll`he plate extends across the oven and it has connected to it a series of fines f extending upwardly andl'connectedtothe: upper conduit or compartment g.A rll`his conduit has achi'mney'z.u to leadoif the productsl of. combustion.

A series of gasV inlet pipesvz' each pipehav-v ing a burner tube communicating with the interior of the lower compartment and each to the oven. A series of inlet openings j furnish air to the flame of the burner tubes.

A series of baliie plates c are positioned over the burner tubes and deflect the flames toward the flues. Each of these battle plates is fastened to the plate e by means of bolts m best seen in Fig. 4. A number of pipes n extend up through the ire compartment d into the oven, these pipes being adapted to conduct air from the exterior of the furl nace into the oven. lt will be` seen that these pipes are heated by passing through the fire compartment and the air passing into the oven will thus be heated. To the upper portion of the oven is connected a chimney o having a damper p with a handle g extending to the front of the furnace. When the damper lis closed the handle engages a bracket 1' fixed to the swinging door c best seen in Fi 5.

It will be understood that the door cannot be opened until the handle is turned thus swiveling the damper to its open position. lt will be seen that the heat in passing from the ylire compartment into the flues and the upper conduit is radiated into the oven.

ln the foregoinff construction the outer casing constitutes the upper, lower and side walls of the bake compartment of the oven with the fire compartment, heat compartment and flues arranged in the interior of the bake compartment of the oven. By

burner tube can be lighted to furnish heat having all the heat producing and conducting elements arran ed within the outer walls the heat generate circulates directly into the bake compartment without first heating any intermediate walls.

I claim:

1. In a portable oven, the combination with a casing adapted to constitute the upper, lower and side walls of a bake compartment; a heat compartment arranged 'Within the upper part of the bake compartment; a fire compartment arranged within the lower part of the bake compartment; a series of flues situated in the bake compartment, separated from the walls and extending from the fire to the heat compartment; devices for heating the iire compartment; and a chimney leading from the upper compartment. v

2. A. device of the kind described, comrising a sectional casing with a swinging voor, an oven located within the casing, means for heating the oven, a chimney connected to the oven, a damper arranged in the chimney, and means carried by the damper for locking the door while the damper 1s closed.

3. A device of the kind describedz com prising a sectional casing with a swinging door, an oven located within the casing, means for heating the oven, a chimney connected to the oven, a swivel damper arranged in the chimney, and means coperating with the damper and the door for locking the door while the damEer is closed.

4. A device of t e kind described2 comprising a sectional casing with swlnging door, an oven 'located wlthin the casing,

means for heating the oven a chimney connected to the oven, a swivel amper arranged in the chimney and means coperating with the handle of the damper andthe door for looking the door when the damper is closed.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

Witnesses:

CHRIS. H. ALMs'rAEDT, H. V. MCELROY.

HERMANN GEHNRICH.. t 

